var all_scores = {'杨璐':[131,143,144],
    '王雪':[131,135,144],
    '韩林霖':[127,139,142],
    '沙龙逸':[123,148,136],
    '李鉴学':[126,135,140],
    '韩雨萌':[129,133,138],
    '刘帅':[116,143,140],
    '康惠雯':[114,142,139],
    '刘钰婷':[115,139,135],
    '林世博':[116,142,129]};
//存储所有学生的姓名
var stu_names = ['杨璐','王雪','韩林霖','沙龙逸','李鉴学','韩雨萌','刘帅','康惠雯','刘钰婷','林世博'];
var stu_name = '李鉴学';
//通过遍历数组stu_names找到stu_name，然后遍历此学生的三科成绩并打印